||Bry`o*zo"um (&?;), n. [NL. See Bryozoa.] (Zoöl.) An individual zooid of a bryozoan coralline, of which there may be two or more kinds in a single colony. The zoœcia usually have a wreath of tentacles around the mouth, and a well developed stomach and intestinal canal; but these parts are lacking in the other zooids (Avicularia, Oœcia, etc.).